I'm scared, but this might be just implantation

Last night my husband and I BDd even though I'm waiting for AF (LOL just was in the mood i guess).

When I went to clean up, I wiped after my pee break and the tissue was covered in of course sperm, but also bits of a light brown coloured stuff, and there was one piece of actual tissue. Now in my mind it could be two things:

The freak-out me asks: If I'm pregnant, could I have possibly hurt my baby, since it's so early in developing?

The common sense-me asks: If I'm pregnant, and I have never noticed implantation spotting, is it possible that I have had had implantation bleeding @ around 5-6 dpo as I had suspected before, and because there was so little, I didn't get any of it on my tissue, and my husband "stirred the pot" a bit and brought it to the surface and it's brown because of course it's old. It wasn't the same brown as old blood normally was though, it was a tan kind of colour which i have NEVER seen come out of me anywhere LOL.

I'm having some cramping today, which I recognize, but I hope I don't recognize it from my memories of my two miscarriages.

Please help!! By the way, AF is due on Friday. Had a little slight bit of pink this morning. I never come early even when we BD near AF.

Is it possible that it could be af begining? I have been told that even with intercourse up to week 12 you can not harm the baby if developing, im sure if you are you will have nothing to worry about. Keep as stress free as you can and try to stay relaxed.

I wish you lots of luck and hope it is implantation and not af showing her face early!